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  1. <?php
  2.  
  3. // your code goes here
  4. $v=array('Id'=>10,'All_User_Grades'=>'A,A,D,A,E');
  5. $aug = $v['All_User_Grades'];
  6. $all_user_grades_arr = explode(',', $aug);
  7. echo '<pre>';
  8. print_r(array_count_values($all_user_grades_arr));
  9. echo '</pre>';
Success #stdin #stdout 0.02s 24448KB
stdin
Standard input is empty
stdout
Array
(
    [A] => 3
    [D] => 1
    [E] => 1
)